U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Definition: Width of raised or painted island separating entry and exit legs (measured at the inscribed circle). If no island is present, record width as zero.
Attributes: Feet
See Figure 9 for additional detail.
Priority: Value added
HPMS/Tool Requirements: None